Merge tag 'v4.11-rc1' into regulator-arizona

Linux 4.11-rc1

1 files changed, 69 insertions, 2 deletions

diff --git a/include/linux/userfaultfd_k.h b/include/linux/userfaultfd_k.h
index dd66a952e8cd..0468548acebf 100644
--- a/include/linux/userfaultfd_k.h
+++ b/include/linux/userfaultfd_k.h
@@ -27,7 +27,7 @@
 #define UFFD_SHARED_FCNTL_FLAGS (O_CLOEXEC | O_NONBLOCK)
 #define UFFD_FLAGS_SET (EFD_SHARED_FCNTL_FLAGS)
 
-extern int handle_userfault(struct fault_env *fe, unsigned long reason);
+extern int handle_userfault(struct vm_fault *vmf, unsigned long reason);
 
 extern ssize_t mcopy_atomic(struct mm_struct *dst_mm, unsigned long dst_start,
 			    unsigned long src_start, unsigned long len);
@@ -52,10 +52,32 @@ static inline bool userfaultfd_armed(struct vm_area_struct *vma)
 	return vma->vm_flags & (VM_UFFD_MISSING | VM_UFFD_WP);
 }
 
+extern int dup_userfaultfd(struct vm_area_struct *, struct list_head *);
+extern void dup_userfaultfd_complete(struct list_head *);
+
+extern void mremap_userfaultfd_prep(struct vm_area_struct *,
+				    struct vm_userfaultfd_ctx *);
+extern void mremap_userfaultfd_complete(struct vm_userfaultfd_ctx *,
+					unsigned long from, unsigned long to,
+					unsigned long len);
+
+extern void userfaultfd_remove(struct vm_area_struct *vma,
+			       struct vm_area_struct **prev,
+			       unsigned long start,
+			       unsigned long end);
+
+extern int userfaultfd_unmap_prep(struct vm_area_struct *vma,
+				  unsigned long start, unsigned long end,
+				  struct list_head *uf);
+extern void userfaultfd_unmap_complete(struct mm_struct *mm,
+				       struct list_head *uf);
+
+extern void userfaultfd_exit(struct mm_struct *mm);
+
 #else /* CONFIG_USERFAULTFD */
 
 /* mm helpers */
-static inline int handle_userfault(struct fault_env *fe, unsigned long reason)
+static inline int handle_userfault(struct vm_fault *vmf, unsigned long reason)
 {
 	return VM_FAULT_SIGBUS;
 }
@@ -76,6 +98,51 @@ static inline bool userfaultfd_armed(struct vm_area_struct *vma)
 	return false;
 }
 
+static inline int dup_userfaultfd(struct vm_area_struct *vma,
+				  struct list_head *l)
+{
+	return 0;
+}
+
+static inline void dup_userfaultfd_complete(struct list_head *l)
+{
+}
+
+static inline void mremap_userfaultfd_prep(struct vm_area_struct *vma,
+					   struct vm_userfaultfd_ctx *ctx)
+{
+}
+
+static inline void mremap_userfaultfd_complete(struct vm_userfaultfd_ctx *ctx,
+					       unsigned long from,
+					       unsigned long to,
+					       unsigned long len)
+{
+}
+
+static inline void userfaultfd_remove(struct vm_area_struct *vma,
+				      struct vm_area_struct **prev,
+				      unsigned long start,
+				      unsigned long end)
+{
+}
+
+static inline int userfaultfd_unmap_prep(struct vm_area_struct *vma,
+					 unsigned long start, unsigned long end,
+					 struct list_head *uf)
+{
+	return 0;
+}
+
+static inline void userfaultfd_unmap_complete(struct mm_struct *mm,
+					      struct list_head *uf)
+{
+}
+
+static inline void userfaultfd_exit(struct mm_struct *mm)
+{
+}
+
 #endif /* CONFIG_USERFAULTFD */
 
 #endif /* _LINUX_USERFAULTFD_K_H */